Lock for pins.



PATBNTED MAY 14, 1907.v

- E. L. SBRBNGBR. LOCK PoR PINS.4 APPLIOATION FILED N 0v.116.'19oe.

- Ziunriar 15 ment. l

z 5 'with the guardremoved-thereirom, Fig. 3 is'a 3 9 tion-of theremovable ap of the attachment,

casing Aor-bodyA portion of the attachment 4ol 1s externally screwithreaded; andxits upper 45 4threads to receive .a

i tapered end portionlO provided with acen# 5 0 tral opening 1-1 throughlWhich the pm'ex-4 v,UNITED STATES PATENT oEEioE. EMIL- IQ. srRENGEEoFNEN KENSINGTON, PENNSYLVANIA. f

t 'i l.oc i |=o||= v`s.. v

No. l353,907; s peeieation of Letters Patent. ratenteamay '14;'190'5.imitation filed Nov'ember r1t, 1906. serial Nu. 343.692. To altwiz/omit may aendern.: hat-the safety or guard attachment'is ape 1tknownthat I, EMIL L. SPRENGER, aplied tothe pointed end of th'epimthecap 9 v e casing only partially. The vcap 9 is 46o screwed upon thethreaded 'end v i-0f thecasing Which 'brings the split ring 8 oppositethetherein tothe accompanying.' drawing. 1o is invention relates tosafety -attach-` fments-for hat pins, scarf pins 'or like articles,`longitudinalmovement thereon as th groove 1 2 is of greater width thanthat of the split t 1s. permanently locked upon the threaded vend 65serted lthrough thej'hat, ythe safety attachy704 Theconstruction of theimprovementwill f e more fully described hereinafter in con-- nectionWith-the drawingl which forms a part of this specification, and itsnovelfeatures attachmentin position thereon. It will be 75 2o will bespeciic-all;T pointedfout in the appended'claims In the drawing, .Figure1 isaside elevation the clamping fingers 6 toperrnit the' attachf of ahat pin with my improvement applied ment to be disengaged fromthe pinand allow thereto,-Fig. 2 is an elevation of the hat pin the latter tobe Withdrawn. Q80 central longitudinal section off-th'e pm at' tachmentvwithl its securin cap removed, Fig. 4 is aA topv planview oft e deviceshown in Fig. 3, Fig. 5 is a central longitudinal secand Fig. 6 is anelevationlof'the split ring em'f p loyed to secure the removable cap. ofthe device. v., 4The referencefnumera'l A1 `.represents thesafety/attachment for hatipnsitis equal'lygo Welladapted for use asv auard .orsafetyde -vice- Iforfscal'f pins.' ment is to be used asascarfpin-attac l enty it Willjo .course be made of smaller size than gwhen designedfor-attachment to ahat'pin. 95

s illustrated in Fig. -2,gal portion of the" casing 1 andv theladjoining portion ofthe] cap 9 are externally-knurled or roughened, as.at '15 to facilitate thefturningv of-theacap. elo'W its screw threadsthe casing Lis pref-f roo erablyformed'wit anannular beveled shoulvder16- upon which-'fits the linternally beveled end 1-7vof the cap 9, thusinsuring a finished joint between'the cap and casing. at Lolaim anddesire to secure by Letm5 ters Patent, isr" l Y 1,; A safety-attachmentfor pins com ris- ,ing fa casing provided with a longitu inal 'which maybe `oyllr1 dri cal-,- s (uareror other shape in cross section and/is.ormedwith'a lcentral bore 2 receive'the pointed end-fof a hat pin 3. eupper -portion'4 'of the Casin 'lend v5 is tapered and slottedto providea plurality ofclamping fingers 6., Thecasing is also `formed withfnannular groove 7 at a l1netal;. 1. 'I v The yreference numeral9'desi-gnates a hollowiinternally threaded capyprovided with aannularvinterna `oovef12 of greatergwidth `than thewidthofthe'split ring8.5 ll-bore and externally screw'thrjeaded and-lonj The utilityof thevdevice' eonstructedfas gitudinally split vand tapered lat one en d toiro 55719111.18 Ade'sscribeefd .willf lbe;l readily 1.111derstood.g1provide clamping iingers, and an internallyterthe pinhasbeen-inserted'through,a` threaded cap provided with. atapered end tends.1he 'cap 9 is'also-provided with an" er e.

i 5 of greater vWidth than thegroove in having a pin opening therein,and means Jfor permanently securing` said cap upon the casing comprisinga split ring, said cap being `-`provided with an internal annular grooveof 3 greater Width tliansaid ring.

` 2. A safety attachment tor pins comprising a casing tormed Wit-h alongitudinal bore, and an annular external groove, and screw threadedabove and below said groove and io having its upper end tapered andlongitudinally split to provide clamping fingers, in combination With aninternallythreaded cap having a tapered upper end. ior'med with a vpinopening and an internalfannular groove the casing; and a split ringsupported betweenA said grooves. f

3. A safr`etT attachment for pins comprismg a casing formed with alongitudinal bore -zo having a contracted extension at its inner end,and an annular external groove and being' screvv' threaded above andbelenY said groove and having its upper end tapered am l longitudinallysplit to provide. clamping iingers, in combin ation with an internallyscrew l threaded vcap tapered at its upper end and Jformed i'vith a pinopening and provided with an 'mnular internal groove of greater widththan the groove in the easing and having its .lower end beveled tosnugbv fit a beveled shoulder on, the casing7 and a split ring {'l'ttingthe groove in the casing and adapted to project into the wider groove inthe cap to permanently connect the cap and easing.

ln testimonv vrhereoii l ailix my signature in the presence of twowitnesses Enit L. srnmein.

l Witnesses:

MAX H. SnoLovrrz, K. H. BUTLER.

